Napkin holder



FIG. 1 is a perspective view of a napkin holder, showing our new design;

FIG. 2 is a front view of the napkin holder of FIG. 1;

FIG. 3 is a side view of the napkin holder of FIG. 1;

FIG. 4 is a top view of the napkin holder of FIG. 1; and,

FIG. 5 is a bottom view of the napkin holder of FIG. 1.

The broken line portions show unclaimed subject matter only and form no part of the claimed design. 

CLAIM The ornamental design for a napkin holder, as shown and described. 